Add change log for 4.0.3

Change-Id: Ie7b27f2cc8ea1afad07d402aa3e68dc8bfa9116f
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

dist/changes-4.0.3.md

@@ -0,0 +1,31 @@
+Qt Creator version 4.0.3 contains bug fixes.
+
+The most important changes are listed in this document. For a complete
+list of changes, see the Git log for the Qt Creator sources that
+you can check out from the public Git repository. For example:
+
+    git clone git://code.qt.io/qt-creator/qt-creator.git
+    git log --cherry-pick --pretty=oneline v4.0.2..v4.0.3
+
+All Projects
+
+* Fixed disabled run button on FreeBSD and macOS 10.8
+  (QTCREATORBUG-16462, QTCREATORBUG-16421)
+
+QMake Projects
+
+* Fixed ABI detection on NetBSD and OpenBSD
+
+CMake Projects
+
+* Fixed issues with opening projects from symbolic links
+
+C++ Support
+
+* Clang code model
+    * Fixed dot-to-arrow conversion being incorrectly done for
+      floating point literals and file suffixes (QTCREATORBUG-16188)
+
+Test Integration
+
+* Fixed crash when editing code while parsing for tests